there are $100$ people standing in circle. the first person has knife and he kills second person and passes the knife to third person. The third person then kills the fourth person and passes the knife to the fifth person. This pattern continues around the circle. Which person will be the last one standing?

please provide me the correct solution along with explanation.

NOTE: I$\text{'}$m also having Chatgpt subscription if I find that the solution is from ChatGPT will dislike it with $5$ accounts. So please don't use it better to Skip :$)$

Thanks in Advance